M.Sc Biotechnology

Bio-Tech is a niche area of the therefore, scope and opportunities are lesser in comparison to MBA. But, if you are technically oriented, then you must go for M.Sc Biotechnology.

Since Oxford is VTU approved and REVA is autonomous.
It depends on you which you opt for.

Definitely B.Tech is better than B.Sc because it has good scope than B.Sc, if you go for B.Sc you'll get low salary and you can go for research but if you go for B.Tech, you can go for anything you need and you'll get a good salary.
choose wisely.

D Y Patil is better as compared to Amity. However, both are not good in terms of quality and reputation. Following are the best colleges to be thought of:
Rajiv Gandhi Center for Biotechnology, Trivandrum
School of Life Sciences, University of Hyderabad
National Dairy Research Institute, Karnal
Bioinformatics Centre, University of Pune
Unfortunately, Mumbai does not have any top ranking institute for biotechnology.

You can refer this link:
http://www.google.co.in/url?q=http://archives.biotecnika.org/biotech-colleges/m.sc-biotech-colleges-india.html&sa=U&ved=0ahUKEwjG8anZyNPTAhUCQyYKHbS4CgoQFggZMAI&sig2=3X0cPJuqdE2_e08zcz8BWg&usg=AFQjCNEwdY7OM7MahI_smIvI2VnVzB8tig
All the best!

It depends where you want to go. MBA will.be helpful.more in administration, marketing kind of job and biotechnology more in technical.side such as production, quality control, RandD, etc.